GB
11
Troubleshooting
Problem
Possible cause
Solution
Red charging LED does not illuminate and Battery (9) not
charging
Battery not correctly inserted
Clean battery socket of charger
Charger not powered
Recheck mains connection
Battery pack has low capacity
Battery not being fully charged
Charge the Battery until the charger indicates a full charge
Battery pack has been charged over 100 times and
capacity has started to reduce
This is normal for battery packs. Contact your GMC dealer to
purchase a replacement battery pack
Drill cannot be switched on (Speed Control Trigger Switch
(13) does not move)
The Forward/Reverse Switch (6) may be in the middle
(‘locked’) position
Slide the Forward/Reverse Switch either to the left or right
Drill does not start when Speed Control Trigger Switch is
depressed
Battery completely discharged
Recharge battery or replace with a fully charged Battery
Defective Battery
Replace Battery
Machine defective
Contact your GMC dealer or authorised service centre
Screws do not reach deep enough into the workpiece
Not enough torque; torque clutch setting too low
Choose a higher torque setting
Low battery voltage
Recharge Battery or replace with a fully charged Battery
Screws are driven too deep into the workpiece surface
Too much torque; torque clutch setting too high
Choose a lower torque setting
During masonry drilling the drill bit does not penetrate
the wall
Unsuitable or blunt drill bit
Replace drill bit with a new high quality masonry drill bit
Drill bit too large
See ‘Specification’ for maximum drilling capacities
Drill not set to hammer mode
Rotate mode selector to switch the machine into hammer drill
mode (see ‘Mode Selection’)
964864_Z1MANPRO1.indd 11
26/05/2016 16:11
